19
Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
[ skylights, ] roof windows, [ skylight operators, ] doorlights, sidelights, transoms, window grilles, doors, storm doors, door sills and jambs, and door plants in the nature of plastic decorative attachments for doors, all of the foregoing being primarily non-metallic
20
Furniture, mirrors, picture frames; goods (not included in other classes) of wood, cork, reed, cane, wicker, horn, bone, ivory, whalebone, shell, amber, mother-of-pearl, meerschaum and substitutes for all these materials, or of plastics
[ storage systems, namely, wall-mounted support grids and brackets, tool hangers, implement hangers, hooks, shelves, work surfaces, bins, storage drawers, and clothes rods for use with the wall-mounted support grids, all of the foregoing being primarily non-metallic ]